DINH Viêt Hoà a écrit :
On 6/27/07, damien chambe - EGS damien.chambe@groupe-laurent.com wrote:
On Fri, 2007-06-22 at 00:28 +0200, damien chambe - EGS wrote:
Our Dovecot server had to be changed due to a hardware problem I was forced to use SUSE SLES 10 for the new one, instead of SLES 9 on the old server.
The kernel matters a lot with NFS. Some kernels are more broken than others. Attribute cache also matters. http://wiki.dovecot.org/NFS
I store mails on NFS, and index on local disk. There's only one dovecot server, so no multiple access.
So deliver is also run on the same server? If all of it is done on the same server, then pretty much the only thing you can change is the kernel or somehow try to work around its bugs. I can think of only
fix on Dovecot's side:
http://dovecot.org/list/dovecot/2006-December/018145.html
Hmm. Actually I just realized another reason that could cause
Timo Sirainen a écrit : this these: Are
the clocks on the NFS server and on your Dovecot machine synchronized? They must be less than 1 second apart at all times or you'll begin to see problems.
I've tried to update kernel (SUSE SLES 10 is 2.6.16) but no change. But synchronizing NFS server and dovecot server with NTP did the trick.
SUSE SLES9 NFS was more tolerant than SLES 10 with time sync...
No more uid messages yesterday !
did you use the following on the NFS server : option "no_subtree_check" in /etc/exports I know that it solved some bugs when accessing files through mmap() on a NFS filesystem.
I can't easily modify export option on the NFS server, it's a Lifekeeper DRDB cluster, I've used noac for the mount on the dovecot side. It slows downs a little but it is very reliable on my config.
Damien